;把mov ax,4c00h之前的代码 复制到 0000：0200处
;自己算要复制的字节数。再减掉5

assume cs:codesg

codesg segment

	mov ax,cs
	mov ds,ax
	mov ax,0020h
	mov es,ax
	mov bx,0h
	mov cx,17h
s:	mov al,[bx]
	mov es:[bx],al
	inc bx
	loop s
	
	mov ax,4c00h
	int 21h
codesg ends

end
